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Summing threshold logs in a parton shower. (English) Zbl 1390.81364
Summary: When parton distributions are falling steeply as the momentum fractions of the partons increases, there are effects that occur at each order in \(\alpha_{s}\) that combine to affect hard scattering cross sections and need to be summed. We show how to accomplish this in a leading approximation in the context of a parton shower Monte Carlo event generator.
81T15 Perturbative methods of renormalization applied to problems in quantum field theory
Full Text: DOI
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